Harbor Freight prices › Air Tools & Compressors › Air Compressor Accessories
MERLINitem 57389
1/2 in. Steel Industrial Quick Coupler Set, 4-Piece
Base price$16.99
Members' price$11.99$5.00 off the shelf price (29%)
Everyone else$16.99
Benton Harbor, MI shelf$17.99$1.00 over the online shelf price 1 more store
Middletown, OH shelf$16.99same shelf price as online 1 more store
$16.99 is about its normal price.
$11.99 is 29% under its usual $16.99 and the lowest it's been.
- This deal ends Dec 3.
- Nothing in its past year points to a better price coming soon.
-
Inside Track Club members
$11.9929% off
Through Dec 3, 2026, limit 3. See it on Harbor Freight's coupon site
Automatic for members: sign in online, or give your member number at the register.
Buy $11.99 is 29% under its usual $16.99 and the lowest it's been.
Price alert
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The numbers
- Today
- $16.99
- Usual price
- $16.99
- 90-day low
- $14.44
- Lowest tracked
- $11.99
- Speedaire equivalent
- $35.75
- Today, members
- $11.99
- Usual for members
- $16.99
- 90-day low
- $11.99
- Lowest tracked
- $11.99
- Speedaire equivalent
- $35.75
Apr 7, 2024
Nov 5, 2026
Prices by store
Harbor Freight prices some items differently by store, and once you pick a store its site shows that store's shelf price. These come from contributors who share their store; the main price above is the base price, the one HF shows before you pick a store.
| Store | Today | Usually |
|---|---|---|
| Middletown, OH store 3366, checked Oct 30, 2026 | $16.99 | $16.99 |
| Benton Harbor, MI store 583, checked Oct 19, 2026 | $17.99$1.00 over | $16.99 |
Price history
Best price for anyoneInside Track Club priceRegular price
Every price change
| When | Price | Members | Why |
|---|---|---|---|
| Nov 2, 2026 to Nov 5, 20264 days, checked 4x | $16.99 | $11.99 | Regular price |
| Oct 30, 2026 to Nov 1, 20263 days, checked 3x | $14.4415% off | $11.99 | 15% off any single item (one item a day) |
| Oct 29, 20261 day, checked 0x | $16.99 | $14.44 | Regular price |
| Jan 23, 2026 to Oct 28, 2026279 days, checked 3x | $16.99 | Regular price | |
| Dec 31, 2024 to Jan 22, 2026388 days, checked 0x | $15.99 | Regular price | |
| Dec 30, 20241 day, checked 0x | $15.99 | $11.99 | Regular price |
| Dec 2, 2024 to Dec 29, 202428 days, checked 0x | $15.99 | $11.99 | Regular price |
| Aug 31, 2024 to Dec 1, 202493 days, checked 1x | $15.99 | Regular price | |
| Aug 26, 2024 to Aug 30, 20245 days, checked 0x | $14.99 | Regular price | |
| Jul 29, 2024 to Aug 25, 202428 days, checked 0x | $14.99 | $11.99 | Regular price |
| Apr 8, 2024 to Jul 28, 2024112 days, checked 0x | $14.99 | Regular price | |
| Mar 25, 2024 to Apr 7, 202414 days, checked 0x | $11.9920% off | Coupon | |
| May 20, 2023 to Mar 24, 2024310 days, checked 0x | $14.99 | Regular price | |
| Apr 22, 2023 to May 19, 202328 days, checked 0x | $14.99 | $11.99 | Regular price |
| Oct 28, 2022 to Apr 21, 2023176 days, checked 1x | $14.99 | Regular price | |
| Jun 5, 2022 to Oct 27, 2022145 days, checked 1x | $13.99 | Regular price |
Tracking since Oct 17, 2026. Last checked Nov 4, 2026.